Like others have said, the bad player in your story is him, he sounds like a complete ass -.- I dislike people like that myself, dont let him get to you though, block him and laugh at how much he sucks ;p

As far as how you preformed in the Moogle fight, best thing to do is to look at how you did, if you felt you did good, then fine, but if you felt you could have done better, then look at how you did it, and see what you could do to improve, better gear, more food/potions, or it honestly could just be the game itself right now.